package com.neusoft.elm.filter;

import java.io.IOException;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;

/**
 * 跨域问题解决方案
 *
 */
@WebFilter("/*")
public class CorsFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException { }

    @Override
    public void doFilter(ServletRequest servletRequest,ServletResponse servletResponse,FilterChain filterChain) throws IOException,ServletException{
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        //设定仅允许端口8081进行跨域访问
        response.setHeader("Access-Contril-Allow-Origin","http://localhost:8081");
        response.setHeader("Access-Control-Allow-Credentials","true");
        response.setHeader("Access-Control-Allow-Methods","POST,GET,OPTIONS,DELETE,PUT");
        response.setHeader("Access-Control-Max-Age","3628800");
        response.setHeader("Access-Control-Allow-Headers","x-requested-with,Authorization");
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }

}
